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Method and system for flow detection and motion analysis

  • US 7,660,439 B1
  • Filed: 12/16/2004
  • Issued: 02/09/2010
  • Est. Priority Date: 12/16/2003
  • Status: Expired due to Fees
First Claim
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1. A method for identifying a flow motion region and one or more flow motion region characteristics, the method comprising the steps of:

  • receiving a video input comprising a plurality of frames;

    identifying motion vectors for each of the plurality of frames;

    identifying a predicted flow motion region in at least one of the plurality of frames based at least in part on the motion vectors of the frame;

    temporally filtering the predicted flow motion region, wherein said temporally filtering comprising distinguishing between a non-flow motion and a flow motion in the predicted flow motion region, wherein said non-flow motion is a motion of non-interest and flow motion is a motion of interest;

    generating a mask based at least in part on the temporal filtered predicted flow motion region;

    applying the mask to a frame comprising the motion vectors to obtain an identified flow motion region; and

    determining one or more characteristics of the identified flow motion region.

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